Add first simple game logic

src/main.cpp

@@ -45,43 +45,79 @@ void loop() {
   scheduler.execute();
 }
 
-uint32_t color = 0xFFFFFF;
 int position = 0;
+int last_internal_button_state = HIGH;
+int last_external_button_state = HIGH;
+unsigned long last_internal_button_pressed = 0;
+unsigned long last_external_button_pressed = 0;
+
+#define STATE_PAUSE 0
+#define STATE_FORWARD 1
+#define STATE_BACKWARD 2
+int state = STATE_PAUSE;
 
 void show() {
   for (int i = 0; i < NEOPIXEL_LEN; i++) {
     pixels.setPixelColor(i, 0);
   }
-  for (int i = position; i < position + 10; i++) {
-    pixels.setPixelColor(i, color);
+  if (state > STATE_PAUSE) {
+    pixels.setPixelColor(position, 0xFFFFFF);
   }
   pixels.show();
 }
 
 void handleButton() {
-  if (digitalRead(INTERNAL_BUTTON_PIN_B) == LOW) {
-    color = 0x0000FF;
-  } else if (digitalRead(EXTERNAL_BUTTON_PIN_NO) == LOW) {
-    color = 0xFF0000;
-  } else if (digitalRead(EXTERNAL_BUTTON_PIN_B) == LOW) {
-    color = 0x00FF00;
+  int current_internal_button_state = digitalRead(INTERNAL_BUTTON_PIN_B);
+  int current_external_button_state = digitalRead(EXTERNAL_BUTTON_PIN_B);
+
+  if (last_internal_button_state == HIGH && current_internal_button_state == LOW) {
+    last_internal_button_pressed = millis();
   }
-  show();
+
+  if (last_external_button_state == HIGH && current_external_button_state == LOW) {
+    last_external_button_pressed = millis();
+  }
+
+  last_internal_button_state = current_internal_button_state;
+  last_external_button_state = current_external_button_state;
 }
 
-boolean forward = true;
 void handleStep() {
-  if (forward) {
-    position = position + 1;
-    if (position > NEOPIXEL_LEN - 11) {
-      position = position - 2;
-      forward = false;
-    }
-  } else {
-    position = position - 1;
-    if (position < 0) {
-      position = 1;
-      forward = true;
-    }
+  unsigned long now = millis();
+  switch (state) {
+    case STATE_PAUSE:
+      if (now - last_internal_button_pressed < 100) {
+        position = 0;
+        state = STATE_FORWARD;
+      }
+      if (now - last_external_button_pressed < 100) {
+        position = NEOPIXEL_LEN - 1;
+        state = STATE_BACKWARD;
+      }
+      break;
+    case STATE_FORWARD:
+      position = position + 1;
+      if (position > NEOPIXEL_LEN - 1) {
+        if (now - last_external_button_pressed < 100) {
+          position = position - 2;
+          state = STATE_BACKWARD;
+        } else {
+          state = STATE_PAUSE;
+        }
+      }
+      break;
+    case STATE_BACKWARD:
+      position = position - 1;
+      if (position < 0) {
+        if (now - last_internal_button_pressed < 100) {
+          position = 1;
+          state = STATE_FORWARD;
+        } else {
+          state = STATE_PAUSE;
+        }
+      }
+      break;
   }
+
+  show();
 }